Home / 3,781.30-5,672.80-1,282.34

Finding the Fourth Proportional to 3,781.30, 5,672.80 and 1,282.34

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Solution

The fourth proportional to 3,781.30, 5,672.80 and 1,282.34 is: 1,923.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.30 : 5,672.80 = 1,282.34 : x
  2. Step 2: Convert to fraction form
    3,781.30/5,672.80 = 1,282.34/x
  3. Step 3: Cross multiply
    3,781.30x = 5,672.80 × 1,282.34
  4. Step 4: Simplify right side
    3,781.30x = 7,274,458.35
  5. Step 5: Solve for x
    x = 7,274,458.35/3,781.30
  6. Step 6: Final answer
    x = 1,923.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.